
Excellent ultra wide angle
1 of 1 people found this review helpful.
The AT-X Pro stands for Advanced Technology-Extra Professional, which means professional build and image. This lens has a constant maximum aperture of f/4, which is indicative of a pro lens. The lens does not extend during zooming and the front element does not rotate during focusing. The use of a polarizer is no problem with this lens.
Wide angle distortion is there, but it's quite controlled when compared to other ultra wide angle lenses, and virtually disappears at the long end. Center resolution is very high, with slight fall off in the corners at f/4, but the corners sharpen up nicely at f/5.6. CA's are pronounced, but this is easily corrected with most photo editing programs out there.
This is a very viable option to the Canon 10-22 ultra wide angle for a lot less money. The build quality is excellent, the image quality rivals Canon's pro series lenses, and it goes very wide.
Review ID: 10000000005548733

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